Miniature transformer/stepdown-regulator

Iman Habib · 2006-05-07T12:17:35+00:00

Hi.I have been looking for a miniature transformers design now for aproject but not found anything to my satisfaction. =(What is need is 220VAC @ 60HZ -> 5VDC and a current output at around 1Ato 2AAre there any single chip ICs on the market that do this?(I do not need galvanic isolation)Cheers//iman

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Iman Habib 20 years ago

I guess that every Usenet-group has an obligatory troll. But I must say that this Phil character is a bit more annoying than most others that I have come across. The only remedy is to simply ignore this kind of behavior and not reply unless the individual has something sensible to say. As they say: -"Don't feed the trolls" Already he has reached my personal list of top annoying trolls on Usenet:

1, Airy R. Bean @ uk.radio.amateur 2, Betov @ alt.lang.asm 3, Phil Allison @ sci.electronics.design

That's a solid third place! Not that "bad" for someone to achieve on a single day. ;-P

On the more serious side of thing.... I am aware of the dangers and I appreciate yours and Phil's ("maybe") concerns. I will be very careful and not try to do anything stupid. Also I have teachers that can help my out and check out my designs so I have a bit of safety that way at least.

//iman

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Phil Allison 20 years ago

"Iman Habib"

** So it this YOUR project or someone else's as you earlier claimed ???

You are a stinking LIAR - Habib.

F*ck OFF.

....... Phil

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bill.sloman 20 years ago

H=E9's more rabid than most ...

My bookshelf has a copy of Abraham I. Pressman's "Switching Power Supply Design" - ISBN 0-07-052236-7 - bought on some else's recommendation.

I've not used it enough to be able to give it an unreserved endorsement, but that stuff that I have read has been pretty good. Well worth looking at or borrowing from a library - but probably useful enough to have been stolen already. Libraries fill up with books that aren't worth stealing.

--=20 Bill Sloman, Nijmegen

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Iman Habib 20 years ago

Well the project as a whole is a lot more than a PSU. The PSU i really a small part of the project so i would not consider it to be my project per se.

Ah well... no use arguing with you about that.

But of course I am, Phil. The worst kind of liar you could imagine. ;-)

Thank you. I will do so.

Have a nice day my little candy cane.

*Hugs & Kisses*

//iman

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Phil Allison 20 years ago

"Iman Habib" = another slimy, wog lying cunt

** So you ALSO lied about not knowing what the project was about.

** Liars who prey on honest folk's good will are the scum of the earth.

Wog liars even more so.

Since they make a lifestyle out of it.

FOAD.

........ Phil

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Klaus Kragelund 20 years ago

Phil Allison skrev:

Why not just use energy answering the post instead of this babble.

NCP1011 FDS210 LNK304

Three chips from three manufactors

Regards

Klaus

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Phil Allison 20 years ago

** Asinine Hotmail scumbag.

"Iman Habib" = another slimy, wog lying cunt

** Try reading the thread - you pile of wog garbage.

This " Iman" lying POS is oblivious to the crucial issue of electrical safety.

I *answered* his post extremely well.

He had no sane explanations.

Cos his is a f****ng IDIOT about to kill someone.

........ Phil

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Klaus Kragelund 20 years ago

sorry - your right

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Klaus Kragelund 20 years ago

NCP1011 FDS210 LNK304

Three chips from three manufactors

Regards

Klaus

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Winfield Hill 20 years ago

You meant to say FSD210. The first two are meant for use with isolation transformers, which is good. The Power Integrations LNK304 is meant for non-isolated use. It uses amazing high-side switching with a bucking inductor, but the series is limited to 300mA or so, see AN-37.

Thanks, - Win

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Klaus Kragelund 20 years ago

Winfield Hill skrev:

Yes FSD210 - but NO, not only flyback converters

- they can all run as non-isolated buck converters (it is just not described in the datasheet). We have had close contact with both the Fairchild and Onsemi guys and they provide application notes. We have opted for the Onsemi part - provides up to 450mA peak current and can be driven with bootstrap diode. A lot can be saved using the Buck design versus the good and old flyback one

Regards

Klaus

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